CONTROL DEVICE AND OPERATION METHOD THEREOF

An embodiment of the disclosure provides a control device, which includes a signal receiving pin and at least one processing module. The signal receiving pin is suitable to couple to the signal transmission pin of a charging module. The signal receiving pin is configured to receive an instruction signal generated by the signal transmission pin in response to the charging module detecting whether the system current reaches an over current protection value or a system voltage reaches the under voltage protection value. The at least one processing module is coupled to the signal receiving pin. The at least one processing module is configured to throttle the frequency of the at least one processing module according to the instruction signal received by the signal receiving pin.